如何阻止新表单使用命名空间 System::Collections

发布于 2024-08-05 08:27:01 字数 1398 浏览 4 评论 0原文

如果我创建一个名为 myForm 的新表单，则 myForm.h 的顶部如下所示：

#pragma once

using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;     //<<<< THIS ONE
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;

这些都不需要，因为出色的表单设计器总是完全限定其对象。

标有“THIS ONE”的那个特别烦人，因为它破坏了我的构建。这是因为我到处都使用 IList 的通用形式 - 我非常喜欢它，所以我把它放在 stdafx.h 中，如下所示：

using System::Collections::Generic::IList;

那么如果我想从我碰巧使用 IList 的任何其他文件中使用 myForm ，像这样：

#include "StdAfx.h"
#include "ABC.h"
#include "myForm.h"

ABC::ABC()
{
    IList<int>^ myList;
    ...
}

然后它无法编译：

1>.\ABC.cpp(7) : error C2872: 'IList' : ambiguous symbol
1>        could be 'c:\windows\microsoft.net\framework\v2.0.50727\mscorlib.dll : System::Collections::Generic::IList'
1>        or       'c:\windows\microsoft.net\framework\v2.0.50727\mscorlib.dll : System::Collections::IList'
1>.\ABC.cpp(7) : error C2872: 'IList' : ambiguous symbol
1>        could be 'c:\windows\microsoft.net\framework\v2.0.50727\mscorlib.dll : System::Collections::Generic::IList'
1>        or       'c:\windows\microsoft.net\framework\v2.0.50727\mscorlib.dll : System::Collections::IList'

那么，我怎样才能阻止新表单添加所有这些无用和破坏性的用法？

原文

If I create a new form called myForm, the top of myForm.h looks like this:

#pragma once

using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;     //<<<< THIS ONE
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;

None of these are even needed, because the wonderful forms designer always fully-qualifies its objects.

The one marked with THIS ONE is particularly annoying because it breaks my build. This is because I use the generic form of IList all over the place - I love it so much that I put it in stdafx.h, like this:

using System::Collections::Generic::IList;

So then if I want to use myForm from any other file where I happen to use IList, like this:

#include "StdAfx.h"
#include "ABC.h"
#include "myForm.h"

ABC::ABC()
{
    IList<int>^ myList;
    ...
}

then it fails to compile:

1>.\ABC.cpp(7) : error C2872: 'IList' : ambiguous symbol
1>        could be 'c:\windows\microsoft.net\framework\v2.0.50727\mscorlib.dll : System::Collections::Generic::IList'
1>        or       'c:\windows\microsoft.net\framework\v2.0.50727\mscorlib.dll : System::Collections::IList'
1>.\ABC.cpp(7) : error C2872: 'IList' : ambiguous symbol
1>        could be 'c:\windows\microsoft.net\framework\v2.0.50727\mscorlib.dll : System::Collections::Generic::IList'
1>        or       'c:\windows\microsoft.net\framework\v2.0.50727\mscorlib.dll : System::Collections::IList'

So, how can I stop a new form from adding all these useless and destructive usings?

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